6. INSTALLATION
The telephone must be sited close to one of the new modular telephone sockets.There is
no limit to the number of sockets you can have installed in your home which means you
can, if you wish, move your telephone from room to room. Unlike sockets, however, there
is a limit to the number of telephones you can operate on your exchange line. Installing
too many telephones will overload the line which could inhibit some or all of the
telephones from ringing.To avoid overloading your exchange line there is a method of
calculating the number of telephones you can use. Add all the Ringer Equivalence Numbers
(REN) together, which are marked on the base of each telephone. Numbers differ so do
check.The numbers when added together must be 4 or less. Sometimes BT telephones are
unmarked but they can generally be assumed to have a REN of 1.0. If in doubt, please
check with your BT Sales Office.The REN value of your Feature Set 3 telephone is 1.0.
7. SETTING THE DIALLING AND RECALL MODE
The settings must be carried out BEFORE connecting the telephone to the telephone
socket. Please note that batteries are not supplied with the unit.
Remove the battery compartment cover on the underside of the base by removing the
screw and sliding back the cover. N.B.The telephone must be disconnected from the line
before removing the battery cover. Fit 2 size M (or equivalent) leakproof alkaline batteries
observing correct polarities.The batteries support information in the memories.
Note: If the Auto Redial function does not operate, you need to replace the batteries.
Two preset switches will be found situated underneath the memory card inlay.These are
the DIAL MODE SELECTOR SWITCH and RECALL MODE SELECTOR SWITCH and
should be set as follows:
7.1 THE DIAL MODE SELECTOR SWITCH
BT are replacing all local exchanges with new ‘TONE' dialling digital systems.They will give
improved clarity and reliability and with ‘Touch Tone’ signalling telephones, instant
connection of calls over digital exchanges and a host of advanced features. However some
telephone exchanges in the U.K. still operate on the PULSE dialling system.
Your NR205HPUK HEADSETPHONE series telephone allows you to operate on either
system and the DIAL MODE SELECTOR SWITCH should be set to the dialling mode
required by your exchange. Set the switch to the PULSE position for pulse dialling or to the
TONE position for tone dialling. If in doubt about the correct dialling mode used by your
exchange, please consult your Network Operator.
7.2 THE RECALL MODE SELECTOR SWITCH
If you are connected to a TONE dialling exchange, set the switch to the TBR (Timed Break
Recall) position to enable you access certain Network Services.
If you are connected to a PULSE dialling exchange, set the switch to the ELR(Earth Loop)
position as recall has no function on direct lines connected to such exchanges. (This will
avoid the possibility of cutting off your call should the recall button be pressed accidentally.)
If you are connected to a PABX, set the switch according to the requirements of your
particular PABX. If in doubt, consult your PABX Instructions or your PABX maintainer.
Having installed the batteries and set the switches, refit the battery compartment cover
ensuring that it is screwed fully into place.
-6-